The Oasis Crewe from Icebreaker provides high performance temperature and moisture regulation for extreme environments. Icebreaker is the warmest and best performing thermal bodywear available. The Oasis Crewe is a perfect layering piece. All Rock/Creek staff stands behind the quality of Icebreaker. This is long underwear second to none.

I had never experienced merino wool base layer until early this past fall, and though initially skeptical of wearing wool to exercise or do anything besides itch, Icebreaker quickly changed my views. The smooth silky material glides on like a second skin, and consistently works with your body to keep your temperature regulated. I've used this piece as a base layer on snowboarding trips in frigid temperatures, for running when it is cool, and for working and lounging regularly. Two things about this shirt stand out as particularly impressive: 1) It really is EXTREMELY odor resistant and re-wearable. I was skeptical, being a runner who actually sweats a decent amount, but I have found that the material airs out extremely quickly and thoroughly allowing for multiple re-wearings without feeling smelly. I've ended many workouts and a couple days of snowboarding with a nearly dry shirt, due to its superior wicking power.2) There is a very wide range of temperatures in which this 200 weight shirt is comfortable. It breathes so well that you can wear it when it's getting warmer without overheating, but it is also a good insulator at cooler temperatures. Even when its damp from precipitation or sweat (ex. on a run when it's cold and misty) it continues to insulate! Altogether, this is an awesome piece and a very worthwhile investment. You won't want to take it off!